HMS Alacrity was a Type 21 frigate of the Royal Navy, constructed by Yarrow Shipbuilders Ltd in Glasgow, Scotland, and completed with Exocet missile launchers in the 'B' position. Launched in the 1970s, she was notable for her active service during the Falklands War of 1982. During this conflict, Alacrity departed Devonport on 5 April 1982 under the command of Commander Christopher Craig. She played a significant role in naval engagements, including sinking the Argentine supply ship ARA Isla de los Estados on the night of 10–11 May 1982, when a direct hit with her 4.5-inch gun ignited the vessel’s cargo of jet fuel and ammunition, causing it to explode and resulting in the deaths of fifteen crew members and seven servicemen. Alacrity was damaged slightly by an Argentine bomb on 1 May 1982 but continued her operations, including a helicopter attack on Argentine coastguard and transport vessels near Kidney Island. During her Falklands deployment, she also engaged in reconnaissance and patrol duties, such as investigating mines in Falkland Sound. Her service was marked by fierce combat, including an encounter with the Argentine submarine San Luis, which fired torpedoes at her, although only one torpedo left its tube and missed. In addition to her combat role, Alacrity participated in various missions, including humanitarian relief efforts after Hurricane Hugo in 1989, when she provided aid to Montserrat. She also undertook deployments in the Far East, making history as the first British warship to enter the Yangtze River since 1949. By the mid-1980s, her hull was suffering from cracking, leading to refits that included welding steel plates along her sides. She continued active service until her transfer to Pakistan on 1 March 1994, where she was renamed PNS Badr. Her armament was modernized with the removal of Exocet missiles and replacement of missile launchers with a Phalanx CIWS, alongside new radar and guns. Badr participated in multinational exercises until her decommissioning in April 2013, marking the end of her maritime service.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.